From: Gregory Herrero <gregory.herrero@intel.com>
Date: Fri, 3 Apr 2015 08:53:25 +0000 (+0200)
Subject: usb: dwc2: host: sleep USB_RESUME_TIMEOUT during resume
X-Git-Tag: v5.15~16004^2~1
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=42a6630a875c17b8ad129d2cc0472217107147ad;p=platform%2Fkernel%2Flinux-starfive.git

usb: dwc2: host: sleep USB_RESUME_TIMEOUT during resume

msleep(USB_RESUME_TIMEOUT) must be done when the controller drives
the resume. This is true after HPRT0_RES is written.
Moreover, restore the delay after controller power is up.

Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/usb/dwc2/hcd.c b/drivers/usb/dwc2/hcd.c
index 93bd4a1..fbbbac2 100644
--- a/drivers/usb/dwc2/hcd.c
+++ b/drivers/usb/dwc2/hcd.c
@@ -1529,13 +1529,13 @@ static int dwc2_hcd_hub_control(struct dwc2_hsotg *hsotg, u16 typereq,
 			dev_dbg(hsotg->dev,
 				"ClearPortFeature USB_PORT_FEAT_SUSPEND\n");
 			writel(0, hsotg->regs + PCGCTL);
-			msleep(USB_RESUME_TIMEOUT);
+			usleep_range(20000, 40000);
 
 			hprt0 = dwc2_read_hprt0(hsotg);
 			hprt0 |= HPRT0_RES;
 			writel(hprt0, hsotg->regs + HPRT0);
 			hprt0 &= ~HPRT0_SUSP;
-			usleep_range(100000, 150000);
+			msleep(USB_RESUME_TIMEOUT);
 
 			hprt0 &= ~HPRT0_RES;
 			writel(hprt0, hsotg->regs + HPRT0);